Apr 20, 2023 · In brief, the micropyle and chalaza are two structures in the ovule. The main difference between micropyle and chalaza is that a micropyle is a small opening in the outer integument of an ovule, whereas a chalaza is the base of the ovule where the nucellus and the integuments join.

Micropyle vs Chalaza - What's the difference? is that micropyle is in seed-bearing plants, a small opening in the integuments of the ovule through which sperm are able to access the ovum while chalaza is the location where the nucellus attaches to the integuments, opposite the micropyle.

In plant ovules, the chalaza is located opposite the micropyle opening of the integuments. It is the tissue where the integuments and nucellus are joined. Nutrients from the plant travel through vascular tissue in the funiculus and outer integument through the chalaza into the nucellus.

What's the difference between chalaza and micropyle? (n.) The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus. (n.) A spiral band of thickened albuminous substance which exists in the white of the bird's egg, and serves to maintain the yolk in its position; the treadle. (n.)

Feb 21, 2025 · Chalaza – The basal part of the ovule from where the integuments arise is known as chalaza. It is the seat for various biochemical reactions. Raphe – It is the ridge-like extension of the funicle along the side of the anatropous ovule is called raphe.

May 16, 2020 · In plant ovules, the chalaza is located opposite the micropyle opening of the integuments. It is the tissue where the integuments and nucellus are joined. Nutrients from the plant travel through vascular tissue in the funiculus …

Sep 1, 2024 · Description: The ovule is curved, resembling a banana, with the micropyle directed towards the chalazal end. Function: This shape reduces the distance between the micropyle and chalaza, although they do not align in a straight line. Examples: Present in …

Chalaza: Non-micropylar end of the seed. The base of an ovule, bearing an embryo sac surrounded by integuments. Raphe: Ridge on seed coat formed from adnate funiculus. Arillate: General term for an outgrowth from the funiculus, seed coat or chalaza; or a fleshy seed coat.

A. Anatropous ovule is the most common type of ovules, occurring in more than 80% angiospermic families. The body of ovule is rotated by 180 ° and micropyle comes near to the funiculus. Chalaza and micropyle are in straight line but hilum is 90 ° to micropyle.

Micropyle: A narrow opening at the apex of the ovule is called the micropyle. Its anatropous ovule, micropyle is directed downwards and is present adjacent to the funiculus (funicle). Chalaza: Chalaza is the base of the ovule directly opposite to the micropyle.